Jones, who will be on the bench for the bronze clash with Australia today, said that there is no room for slacking.
"We want to make sure we're successful and we want to finish third in this competition," Jones said.
"There are a lot of proud people in this squad and back home who want us to do well and we have to make sure that we perform.
"We're playing in a World Cup game, you're putting the Welsh jersey on and that's a massive honour. Whenever you put that jersey on you have a responsibility to it."
Jones will win his 104th Welsh cap if he comes off the bench.